磁性液体的等离子体制备及表面张力系数研究

Preparation Using Plasma and Research of Surface Tension Coefficient for Magnetic Fluid

本文使用常压非平衡等离子体技术制备了磁性液体,通过透射电镜分析可知纳米磁性颗粒的粒径为10nm左右。使用高精度的力敏传感器对制备的磁性液体进行了表面张力系数的研究。随着磁场强度的增加,磁性液体的表面张力增加;当磁场增加到一定程度时,表面张力的增加变得缓慢,这是由于磁性液体中颗粒的数量是有限的。

Magnetic fluid had been prepared by using non-equilibrium plasma technology in normal pressure, and the grain size of nano-magnetic particles was determined to be 10 nm or so by TEM. The surface tension coefficient of magnetic fluid had been studied by using force sensor with high precision. The surface tension coefficient increased with the enhancement of magnetic strength. When the magnetic field enhanced to a certain degree, the increase of surface tension coefficient slowed down as a result of the limited amount of nano-magnetic particles.